William stephenson



(No Model.)

STEPHENSON. SEED DRILL DISK SHOE.

Patented Ma -1-0, 1898.

THE worms PETERS co. PhOTO-LITHQ, WASHINGTON, Dy cv Nrrn I ATENT tries.

SEED-DRILL-=DISK SHOE.

SPECIFICATION forming part of Letters Patent No. 603,863, dated May 10, 1898. Application filed July 10, 1897. safari). 644,065. (No model.) i

To all whom it may concern.-

Be it known that I, WILLIAM STEPHENSON,

exact description of the construction and operation of the same.

The invention relates to further improvements on seed-drill-disk shoes such as are described in my previous application, Serial No. 543,467, filed May 28, 1895, and in Letters Patent No. 588,027, granted to me on the 10th day of August, 1897.

The objects of my present invention are to provide, first, the grain-spout so constructed as to be better protected from mud and water and not so liable to be clogged up; second, the journals are also better protected from dust, 850., thus preserving the lubricating-oil and conducting it out on the inside of each disk and central scraper, keeping the parts always lubricated, prevents mud from sticking to the inside of the disks, and, further, prevents rusting of the same; third, the oilchannel is in the rear side of the grain-spou t, and consequently it is easier to get at it and more convenient every way to the operator; fourth, a double adjustable central scraper is constructed and placed between thedisks for the purpose of keeping the inner surfaces of the disks clean and preventing mud from clogging up the spout portion during the op eration of the machine, and, fifth, two outside self-acting side scrapers, having two motions,

being pivoted to levers, and the latter pivoted to the said scrapers, are provided, and the side view of a casting embracing a combination of grain spout, draw-bar connection,

shield, hollow standard, oil-chamber, and grain-guide all cast in one piece. Fig. 4represents an inside view of one of the scrapers detached pivoted to its lever. Fig. 5 represents a top view of one of the scraper-levers detached. Fig. 6 represents a rear view of the lower main central scraper. Fig. 7 is a similar view of the adjustable top-portion part of the scraper. Fig. 8 is an edge view of the upper and lower parts of the double scraper. Fig. 9 is a longitudinal section of the bottom of the oil-reservoir and axles.

In the drawings, A represents the casting, combining the grain-spout a, the draw-bar connection I), the shield c,.tl1e oil-conduit d, the grain-guide e, the hollow tapering axles ff, the oil-reservoir g, side lugs h h, and rear lugs t, z", and 3, and these parts will collectively hereinafter be indicated by the casting A, and it will be observed that in constructing the said casting the hollow tapering axles are cone-shaped and chill-hardened, the outside being quite smooth, and afford an eX- cellent bearing for the disks, which are designated by the letterB. They are about twelve inches in diameter and made of thin spring-steel plate, the outer edges of which are beveled about five-eigths of an inch inward from the outer periphery of the edge, as shown at Fig. 2, and have riveted to their outer centers a slightly-beveled hub C, and i 'washer 70 at each end of the axles f and secured at the threaded end by a nut Z, thus securing the disks B to the casting A, as shown. It will be seen that the outer ends of the hub O are screw-threaded and are pro tected from mud and dust by means of conical-shaped caps m, which are hollow and threaded on the inside and made to screw on the corresponding threaded hubs O 0, they having also crossed notches n on their outer end, in which to insert a large screw-driver or suitable flat rod to tighten or release them.

It will be observed that my method of oiling the axles ff and also the inside of the disks B B at the same time is peculiar and highly efficient and may be described as folows:

The oil-conduit is in rear of the grainspout, and the oil is poured in the top orifice, of the conduit d. Thence it passes down into the oil-reservoir g in the interior of the hollow axles ff. It then exudes slowly through notches 0, made in the extreme outer end of the said axles ff, and thence finds is way up and around the axles between them and the hub, thoroughly lubricating the parts so necessary for their proper operation. Thence the oil exudes onto the inside of the disks and prevents them from retaining mud, dust, &c., besides preventing them from rusting. I may also say here that when the oil flows through the oil-openings 0 in the ends of the axles a portion of it forces its way behind the washers 70 into the inner cavity of the screw-caps m m, which forms a kind of secondary oilreservoir 19, and their rotary motion brings the oil always to the top of the axles, which materially assists in keeping the parts always thoroughly lubricated.

In practice it will be found best after the oil is deposited in the oil-conduit and oil-' chamber to insert a piece of cotton-waste into the oil-conduit d, the lower screw of the central scraper projecting into the oil-conduit far enough to prevent the waste from going farther down into it, and the entrance to the said conduit is tightly corked.

The different scrapers may be described as follows:

The side scrapers consist of two irregularshaped plates q, provided with lugs 'r on their rear side, to each of which is pivoted a lever s, the latter also being pivoted to lugs h, having a steel pin a affixed thereto for that purpose, the lever being secured by a cotter-pin I), passed through the said pin a. The outer ends of said levers are bent inward, and a spiral spring t of the requisite degree of strength is slipped over the said lever ends to press them apart and thus cause the said side scrapers q to impinge on the outer side of the disks B, as shown at Fig. 2, and clean them. The tension. of the said spring t can be adjusted by means of small holes u in the bent part of one of the levers s, when the spring can be compressed and a pin U placed in any of the said holes to to increase or diminish the tension-pressure of the scrapers g on the outside of the disk B, according to the nature of the soil. By this means the. outside cutting edge of each disk is kept clear of soil. The inner face of each of the said disks is kept clean by means of two adjustable central scrapers w and w. The larger and lower scraper w is tapered to correspond to the slanting position of the disks B, as shown at Fig. 2 and detached at Fig. 6, having a longitudinal slot 00, over which a washer z is placed for a screw-bolt y to pass through and made to screw into the lug t 011 the rear of the casting A, the upper part of the said scraper resting against the lug 3. Thus it will be seen that by means of the slot w the scraper can be adjusted vertically to suit the angle of the two disks B B to keep their central portion clear of mud when in operation. It will be seen that the edges of the disks B B are beveled inward about five-eighths of an inch from the outer edge, and the short upper scraper w is beveled from its center downward to correspond to the bevel of the disks, as shown at Figs. 2 and 7. It has also a slotted opening 00, through which a capped screw y is made to pass to screw into the lug i, cast on the rear of the grain-spout casting A, a washer being placed between the screw-head and the scraper, and thus the said upper scraper w can be adjusted so that the wear of the same can be taken up to correspond to the bevel of the disks. In their normal position the top scraper to will overlap the lower one to about one-eighth of an inch, the result of these two central scrapers being to keep the inside surfaces of the disks always clean as they revolve past the scrapers when in operation.

I do not in this application claim the combination of a grain-spout, revolving disks mounted upon the opposite sides thereof, and a tapering scraper adjustably mounted upon the grain-spout and between the disks, the said diskslrevolving in intersecting planes, whereby the adj ustment of the scraper vertically regulates the bearing of the scraper on the inner faces of both of the said disks, as such matter is described in my hereinbefore-mentioned application ,Serial No. 543,467; but

What I do claim is l. A casting for seed-drills, having an axle on each side thereof, a grain-guide in front of the axles, and a shield in front of the guide,

the whole being cast integral and being pro vided with a grain-spout between the axles and the grain-guide, substantially as described.

2. A casting for seed-drills, having a hollow axle on each side thereof, and a grain-guide and a draw-bar connection in front of the axles, and provided with a grain-spout in front of the axles and an oil-conduit, in the rear of the grain-spout, communicating with the central cavity of the axles, the said casting having lugs on the rear of the grain-spout, the whole being cast in one piece, substantially as described.

3. The combination, with a casting, having an axle on each side thereof, a draw-bar connection and a shield depending from the drawbar connection, and provided with a grainspout in front of the axles, the said parts being cast integral, of disks mounted upon the axles and behind the shield, substantially as described.

4. The combination with a casting having a hollow axle on each side thereof, and a grainguide and a draw-bar connection in front of the axles and provided with a grain-spout in front of the axles and an oil-conduit, in the rear of the grain-spout, communicating with the central cavity of the axles, the said casting having lugs on the rear of the grain-spout, the whole being cast in one piece, of disks upon the axles, and a scraper adjustably secured between the disks upon the said lugs, substantially as described.

5. The combination with a casting, having a hollow axle on each side thereof and a drawbar connection, a shield and a grain-guide in front of the axles, and provided with a grainspout between the axles and grain-guide, and with an oil-conduit in rear of the grain-guide, communicating with the cavity of the axles,

and having lugs on the rear of the said 011- scraper cleaning the beveled surfaces thereof,

substantially as described.

7. The combination with disks, of pivoted levers s s, scrapers q q pivoted to one end of the said levers, and a spring connecting the opposite ends of the said levers, whereby the scrapers are forced against the disks and accommodate themselves to the inclination thereof, substantially as described.

8. The combination with hollow axles, serving as an oil-reservoir, of disks provided with hubs, mounted upon the said axles, means for retaining the hubs in place, and screw-threaded caps upon the hubs forming auxiliary oilchambers upon the exterior of the axles, the said auxiliary chambers being in communication with the said oil-reservoir in the interior of the axles, substantially as described.

Dated at Hamilton, Ontario, this 10th day of March, 1897.

\VM. STEPHENSON.

In presence of-- H. KANE, WM. BRUCE. 

